He would slit their throats, then rob them and dump their bodies into the river... Steven and Roy return as the haunted mysteries of Eximere deepen When the ghosts of grotesque, bloated bodies invade Eximere, Steven and Roy investigate only to find that other people are exploring the Unser Mansion above them, just like they did years ago. Somehow their arrival has released the spirits of dozens of drowning victims, who now wander the halls. Secret rooms with no windows or doors hide new mysteries inside the mansion. It will take knowledge of the Dark River to figure things out. Although the Dark River is accessible from Eximere, Roy forbids it, and Steven has promised never to go there. When Derick arrives to conduct his own investigation, it becomes clear that the Dark River is where the answers to James Unser's mysteries lie. Will Steven travel there, breaking his promise to his father? The Port of Missing Souls is Book 12 in The River series. In it, many of the River universe storylines come together to weave a complex tale of one man's evil quest for power.